Refrigerating mechanism.



F. P. MILLER. RBFRIGERATING MEGHANISM. APPLIGATIoIf FILED un. 6. 1907.

91 5,621 Patented Mar. 16,1909.

7H: NURRIS PETERS Ca, WASHINGTON, D. C

FRANKLIN P. MILLER, OF BLOOMFIELD, NEW JERSEY.

REFRIGERATING MECHANISM.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed January 5, 1907. Serial No. 350,977.

To all whom it may concern.'

Be 1t known th at I, FRANKLIN l?. MILLER,

a citizen of the United States, residing at y Bloomfield, in the countyof Essex and State of New Jersey, have invented new and usefulImprovements in Refrigerating Mechanism, of which the following is aspecification.

rIhis invention relates to refrigerating mechanism for making ice creamand other analogous substances or materials, and the primary object ofthe same isvto provide a novel association of driving devices foroperating an ice breaker and a freezing can and dasher, eitherindependently or conjointly.

A further object of the invention is to pro vide a simplifiedorganization of driving devices for operating a can and dasher inreverse directions and permitting a ready separation and removal of thecan and dasher and a withdrawal of the tub Without disturbing therelative arrangement of the driving devices.

The invention is included in preferred form in the construction andarrangement of parts which will be more fully hereinafter specified. i

ln the drawing: Figure 1 is aside elevation, partially broken away andpartially in section, of an ice breaker, a freezing can and tub orreceptacle, and driving devices disclosingl the features of theinvention. Fig. 2 is a detail sectional elevation. of a portion of thedriving mechanism which cooperates directly with the can and dasher.Fig.V 3 is a bottom plan view of the can controlling gear or pinion. 4is a detail plan view of the can actuating device which is secured onthe top of the can and engaged by a portion of the can controlling gear.Fig. 5 is a detail horizontal section showin the supporting means for abelt shifting side. Fig. 6 is a detail perspective view of a part of thesu porting means or one of the guides for t e belt shifting slide.

Similar characters of reference are employed to indicate correspondingparts in the several views.

The numeral 1 designates a base support or bed of any suitable structurehaving uprights 2 rising therefrom and supporting an ice breaking case 3having a toothed cylinder 4l rotatably held therein on a drive shaft 5which projects outwardly a considerabledistance,'* for a purpose whichwill ble-presently set forth. The base 1 yalso has suitable retainingdevices disposed thereon to engage the bottom of a tub or receptacle 7,which, in the present instance, is shown as the tub of an ice creamfreezer and having therein a freezing canl 8 with a removable lid orcover 9 and a dasher 10 provided with a shaft 11. The dasher shaft 11projects upwardly through an apertured head or tubular boss 12 on thecenter of the lid or cover 9, andthe upper end of said shaft ispreferablyformed with a socketfor separably receiving an operating meanswhich will be more fully hereinafter specified.`

The driving devices which particularly embody the features of thepresent invention comprise a minimumnumber of parts and are so disposedwith relation to the driving shaft 5 that it is readily possible to havea united operation of the ice breaker and the can 8 and dasher 10, or anindependent operation of such parts; and a further feature of theinvention is the location of the ice breaker and the tub or recep tacle7 adjacent to each other for convenience in supplying the said tub orreceptacle with the broken ice and also to provide an organization ofparts which will contribute to the expeditious and effective operationof freezing ice cream or other substance or material that may be placedin the can 8. The driving devices include, of course, the driving shaft5; and on the projected portion of the said shaft are two loose pulleysor band Wheels 13 and y14 andan intermediate fast pulley 15, the pulley15 being caused to rotate at all times with the shaft 5. The width ofthe pulley 13 is such as to permit a driving belt 16 of a correspondingwidth to occupy the same solely, or the belt 16 may be shifted inwardlyover the pulley 13 and on the pulley 15 and thus obtain an operation ofthe ice breaker. The belt 16 may also be shifted completely over onthepulleys 14 and 15 and clear the pulley 13; and in this latterposition of the belt both the ice breaker organization and the can anddasher will be operated. The hubof the pulley 14 carries a pinion 17 atits inner extremity and is held in continual mesh with an intermediatemotion transferring pinion 18 supported from the upper portion of one ofthe uprights 2. v f j On hthe top of the uprights V2 a bearing frame 19is secured and is projected at one extremity beyond one of :thesaiduprights.

In this bearin'g'frame a power transmitting shaft 2O is disposed and hason one extremity a pinion 21 which is--h'eld inA continual-'mesh Withthe pinion 18. On the extremity of the shaft opposite that carryingthe'pinioir 21 a beveled pinion 22 is secured, (see Fig'. 2)

- this beveled pinion'm'eshing'wvithreversely disposed upper andlovverfbeveled pinions. 23 and 24. A coupling stem or shaft25.

`...passes .through the pinionsz23 and,24,.the

pinion 23being1secured tofandrmovable with,

. said coupling shaft andthe pinion-24 being loose on. fthesame shaft. fThe pinions 23v and 24-are held` by a supporting. member26..con' nectedto or integrally formedaviththe bear-.

l 4ing frame 19.; and. inlthe said supporting l. .member an.adjustingcapV is ,located and.. 2O4

comprises a lower-socket member or .collar 27 having an inwardly projectin-gstud. 28-vhich 33 to the upper continually engages acircumferential-groove.. 29v formed in theupper. extremity of .the

. shaftA 25. .This cap. also-comprises anupper slotted member 30 Whichis engagedby a lowering the. cam: 32 the coupling..shaft`25 Will-.becorrespondingly mofvedithrQugh-fthe @mediumofthe stud oimpin 28.engaging1the i groove 29.A The lower end ofthe shaft,25, j. as atl35, issquared. oraformed angular-i in cross-section toxremovably iit= ins-thesocket l at .-the,.upper end. of thendasher shaft- 11.

TWhen the coupling shaft25 is elevated-the range of movement permittedis rsuch as-to -disengagef the said 4shaft jfromwthe .-dasher shaftVWithout` in the least modifying the; relationship of' :thepinions 22,and. 24,` .but

- separates the pinions23and 22. l Thepinion 24 has its hub36 intheformofan elongated sleeve carrying at its. vlower; eXtrernityi .an

integral disk 37 from.Which'dependfopposed legs 38,.the.latter beingtwoinnUmber-and .zpreferabl. in diametrical.relation( Fixed-ion- `the tubuar head! or boss. 121 ofthe .lid or.. cover 9 is an-actuatings devicei39ahaving` concentric edgewalll 41 leading-thereto and .arranged inreverse positions to guidethe legs 38.*into contact with -theishoulderedorganization ofthe pinion.' 24, as. explained, ...are ,long enoughY topermit .thegapplication and removal of the' actuating device,39.andf

l l'projections 40. The upper. end of .thedasher shaft 11 hasfreerotation in the tubular head or.boss12f,1and thefleg's38.1carriedfbyfthe.

.-thelid orcover 9;,andwhen it is desired to.

. `lseparate-the :lid or coverl fromthe operating.`

:....inechanism it .vvill-` be necessarytoafirst-uncouple i the shaft25V from the-.- dasher.l shaft,.=

the shaft 25 being maintained in uncoupled.

.position bythe aipivard. throw ofthe cam 32.-.

It will be observed that the head 12 of the lid or cover 9 projectssuchdistance upwardly u ith respect to the upperedge of the tub orreceptacle 7 that there will be no difliculty in-assmblingordissociating the tub or receptacleand the can or lid or cover thereforwith respect to the operating mechanism just explained.

)Another advantage of the foregoing construction is,.: that after thecoupling shaft 25 and its upper pinion 23 are elevated or verticallyshifted to disengage the said shaft from Vthedasher shaft, the can. 10through the medium ofthe cover 9 may be further rotated in theyrefrigerating material contained in the tub orreceptacle 7.*L In makingice cream or analogous substances v. here prolonged freezing isdesirable, it is frequently found beneiicial to rotate the can orreceptacle contain- Aing icecream orfotherlike material Within the-tub.or receptacle andv the refrigerating material;v ithout rotating. the`dasher or stirrer. i The continuation of the rotation of the can 10inthe-present construction is permitted by the pinion 24ieniaining in.meslrv.V ith Athe pinion 22-andthe .engagement ofthe depending means 38v; ith the shouldered coupling device 39 onthe can cover.

. A novel means has also been devised .for

v-shiftingthe belt 16,. and consists of aslide or shiftingbar 42 havingnotches 43 inthe lov: er

edgethereof to engagebne of a set ofiguides for holding the same andmaintain a 'fixed adjustment-thereof. One end ofthe slide orAshiftingbar42 has a griporA handle 44,. and at ving-the shiftingbar 42inoperative `relation -to -thepulleys 13 14.-and, 15 and-the belt 16;and it may be foundfnecessary at: times` to `change the position of thesaid bar or i to `modifyftheirange of adjusting operationithereof withrelation to the-belt-.16-

. Tow avoid-thenecessity ofboring or apert'uringithe uprights 2, .andto-male it-possiible toapply the sustaining means for. the bar .42at=diiierent points or `elevations as maybe opposite shoulderedprojections .40 :with 'ae vfound necessary, tvi'o-.guides46 .are usedand 1-eachfcomprisesamain body 47 having a vertical slot 48 intheupperfportion ofthe center zthereof and anzangular'flange 49 at oneVside .f between this guard-and -theflangef an opening 51 is bored orotherwise formed in the-body 47-beloW lthe .loverterminal ofitheslot 48.In applying these guides 1 `the l flanges \49 are brought toibearclosely againstthe inner-por- -tions ofthe uprights, as indicated bydotted lines iii-Fig. .1, and -theiguards=50 thereby dis- .l .posedoutwardly,l the two guids; being.- connectedby a rod or elongated bolt52=ivhich extends through the openings 51, the guards j foundexceptionally convenient in stopping 50 serving to hold the guides 46 inplace by coperating with the adjacent portions of the rod 52. Thenotches 43 of the bar 42 receive the lower Wallof the slot 48 nearestthe pulleys 13, 14 and 15, the said slot being f long enough to permitthe bar to be disengaged therefrom in making a change in the adjustmentor during the operation of shifting the belt 16 from one position toanother.

While this belt shifting means is preferred, it

v ill be understood that other devices for this purpose may be employed,but hatever form of slide or belt shifting means may be used,.theadvantage of the guides 46, 'which' are practically clips, should beconsidered in vie-f1V of the fact that in their applicationit isunnecessary to perforate or other'P-lise mutilate the uprights 2.

As a convenient means for limiting the operation of the slide bar 42 inopposite directions and to determine the adjustment of the belt 16,stop-pins 53 are provided and fixed in the bar to contact vfith oppositesides of the guide 46 nearest the pulleys 13, 14 and 15.

From the foregoing the operation will be readily understood, and,briefly, it will be seen that if the belt 16 is shifted to the positionshown by dotted lines in Fig. 1, or so that it will engage theintermediate pulley 15 fast to the shaft 5, the ice breakin mechanismalone will be operated. If t e belt is thrown inward to engage both thepulleys 14 and 15, both the ice breaking mechanism and the can 8 anddasher 10 will be operated. If the belt is pulled fully in to engage theulley 14 solely, then the can 8 and the das ier 10 will be aloneoperated. The advantage of having the ice breaker and the can 8 anddasher 10 simultaneously operated resides in the convenience ofsupplying the tub or receptacle 7 with broken or crushed ice from theice breaker at intervals during the refrigerating operation and Withoutrequiring conveyance of the ice from a distance to the tub orreceptacle.

As hereinbefore indicated, the tub or receptacle 7 and the can 8 withits dasher 10 may be used for freezing other substances or materialsaside from the production of ice cream, for which the entire apparatushas been specially devised.

Vhen it is desired to have the ice breaker and refrigerating can anddasher remain inactive, the belt 16 is shifted so as to solely occupythe pulley 13. This will permit the prime power source to remainuninterrupted in its operation in view of the fact that the pulley 13runs loose on the driving shaft 5, but under these conditions the beltwill always be ready for immediate disposition with respect to thepulleys 14 and 15 through the actuation of the slide bar 42, and, ashereinbefore specified, this provision will be and starting themechanism.

Having thus fully described the invention, what is claimed as new isz 1. In a driving mechanism of the class specified, the combination of adriving shaft having an ice breaker thereon, a plurality of ulleys onthe shaft, one of the pulleys being Lcose on the shaft and having a gearelement rotatable therewith, a power transmitting shaft geared to theloose pulley, a rotatable refrigerating can and dasher, and a couplingshaft between. the power transmitting shaft and the dasher and can, thecoupling shaft being movable to disconnect the same from the dasher andprovidedy with means for j separating it from the can.

2. In a mechanism of the class specified, the combination of a drivingshaft having an ice breaker thereon, a rotatable refrigerating can anddasher, a power transmitting shaft independent of the ice breaker shaft,a coupling shaft movably mounted between the power transmitting shaftand the can and dasher and provided with means for rotating 'the saidcan and dasher in reverse directions,

ulleys on the driving shaft,'one of the puleys being loose, gear devicesbetween the loose ulley and power transmitting shaft, and s iftablemeans engaging the pulleys and controlling the united operationA of theice breaker and can and dasher or the individual operation of the saidcan and dasher and ice breaker.

In a mechanism of the class specified, the combination of a drivingshaft having an ice breaker thereon, rotatable refrigeratingdevicesconsisting of a can and dasher therein, elements on the drivingshaft for operating the ice breaker and refrigerating devices, a powertransmitting shaft geared to one of said elements, a rotatable couplingshaft inj.

terposed between the power transmitting shaft and the refri eratingdevices, and f means engaging the e ements of the driving shaft forunitedly or independently operating the ice breaker and refrigeratingdevices.

4. In a mechanism of the class speciiied, the combination with a drivingsh aft having two loose 'and one fast pulley thereon, an ice breakersecured to and operative by the dri ving shaft, a power transmittingshaft geared to one of the loose ulleys, an actuating device shiftableon tlie pulleys, reversely rotatable refrigerating devices consisting ofa can and dasher, a rotatable coupling-shaft geared. to the powertransmitting shaft, and means engaging the coupling shaft for shiftingthe latter and also for operatively connecting it to the can.

5. In a mechanism of the class specified, the combination of a drivingshaft, a power transmitting shaft operatively connected to the drivingshaft and having a beveled pinion on one end, a rotatable can provided

